12001400401 has 16 divisors (see below), whose sum is σ = 12568877568. Its totient is φ = 11447092800.

The previous prime is 12001400377. The next prime is 12001400413. The reversal of 12001400401 is 10400410021.

It is a cyclic number.

It is not a de Polignac number, because 12001400401 - 2⁷ = 12001400273 is a prime.

It is a super-2 number, since 2×12001400401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001400101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3667396 + ... + 3670666.

It is an arithmetic number, because the mean of its divisors is an integer number (785554848).

Almost surely, 2^12001400401 is an apocalyptic number.

It is an amenable number.

12001400401 is a deficient number, since it is larger than the sum of its proper divisors (567477167).

12001400401 is a wasteful number, since it uses less digits than its factorization.

12001400401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12001400401 its reverse (10400410021), we get a palindrome (22401810422).

The spelling of 12001400401 in words is "twelve billion, one million, four hundred thousand, four hundred one".